i am poking around with EL wire i bought from here (like a year ago by now, got to busy doing other things).and i am looking into "fading" el wire, or changing the intensity, not i read that you can do it with a triac but it seemed very finnicy.another source suggested that the best way of dimming EL wite, is by actually modulating the AC frequency going into the EL wire.now this i find very interesting, and since i have (a bunch) of 2AA EL wire inverters, i was thinking, instead of using those, i could canabalise one for the transformer, and use a arduino with his PWM control, to change the brightness, by changing the frequency of the AC signal.

okay, so , follow-up:the circuit works, but you will need a beefy transistor, with even bigger cooling finsi ended up using a TIP31B to drive it.also, getting a set frequency isn't easy, i ended up using a library called PWM (https://forum.arduino.cc/index.php?topic=117425.0)it works like a charm, i can even play music on the transformer :)

oh btw, the transformer is one salvaged from a 3v EL wire inverter, and the resistor is 100 Ohm